﻿//===================================================================================
// Microsoft patterns & practices
// Silk : Web Client Guidance
//===================================================================================
// Copyright (c) Microsoft Corporation.  All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE.
//===================================================================================
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious.  No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
//===================================================================================

using System;
using System.Web.Mvc;
using Microsoft.Practices.ServiceLocation;

namespace ETL.Web.Controllers
{
    /// <summary>
    /// Provides base for controllers that need authorization and user information.
    /// </summary>
    /// <remarks>
    /// This base controller largely provides common methods to recover authorized user information.
    /// </remarks>
    public class AuthorizedController : Controller
    {
        private readonly IServiceLocator serviceLocator;

        public AuthorizedController(){}
        public AuthorizedController(IServiceLocator serviceLocator)
        {
            this.serviceLocator = serviceLocator;
        }

        protected T Using<T>() where T : class
        {
            var handler = serviceLocator.GetInstance<T>();
            if (handler == null)
            {
                throw new NullReferenceException("Unable to resolve type with service locator; type " + typeof(T).Name);
            }
            return handler;
        }
    }
}